﻿using System;
using System.Collections.Generic;
using System.Text;

namespace _4._3Counter
{
    class Product
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public int Num { get; set; } = 66;
        public override string ToString() => $"Id：{Id}， 用户名：{Name} ， 购买次数数量：{Num}";
    }
}

